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UHFSSRx

Javad UHFSSRx User manual

  • Hello! I've reviewed the datasheet for the JAVAD GNSS UHFSSRx radio. This document provides details on the device's serial data transmission, power management with sleep mode, and multiple I/O lines. It also explains how to reset the radio and provides some connectivity options. I'm ready to answer your questions about it.
  • How to enter the maintenance mode?
    How the sleep mode can be used?
    How to reset the radio?
UHFSSRx
For operation manuals and other technical documents,
please visit our website and download the latest firmware.
Here are the link to the UHFSSRx firmware, documentation,
and utilities:
http://javad.com/jgnss/products/radios/oem-radios.html
900 Rock Avenue, San Jose, CA 95131 USA
Phone: +1(408) 770-1770
www.javad.com
Copyright © JAVAD GNSS, Inc., 2021
In order to address customer support inquires in a timely and eective manner; JAVAD GNSS has created a
powerful online question utility. To take advantage of this utility, please log into your JAVAD GNSS account
and select QUESTIONS from the drop down menu.
The questions utility may also be reached by clicking: Menu>Questions
When the JAVAD GNSS support team posts a response to your inquiry, an
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tered in your profile.
Support Inquires
80.8 3.181
45.8 1.803
MMCX Connector
9.3
0.287
0.366
7.3
12.7 0.499
Connector, 16-Lead,Header
Dimension in mm [inch]
UHFSSRx
Read this First
Revision 3.0 April 5, 2021
16-Lead Header Connector Pinout
PIN
#
Signal
Designator
Signal
name Description I/O Comments
1 GND GND - Ground Signal and Chassis Ground
2 DSP UART 1 TXD TTL Input Transmitted Data Serial Data Input
3 DSP UART 2 RXD TTL Output Received Data Output for received serial data
4 DPORT5 DTR or DP/
MP TTL Input Data Terminal Ready
Control line can be used as a backup method for entering Command mode:
(0V) – Maintenance Mode; (3.3V) – Data Mode
An internal 100K pull-up enables Data Mode if this signal is le unconnected. Mainte-
nance Mode is also accessible by transmitting an escape sequence.
5 DPORT1 CTS TTL Output Clear to Send
Used to control transmit flow from the user to the radio:
(0V) – Transmit buer not full, continue transmitting
(3.3V) – Transmit buer full, stop transmitting
6 TTLI1 SLEEP TTL Input Sleeps/wakes radio
Receive only
In sleep mode, all radio functions are disabled consuming less than 50µA. An internal
10K pull-down wakes up the radio if this signal is le unconnected. At wake up, any
user programmed configuration settings are refreshed from flash memory, clearing any
temporary settings that may have been set:
(3.3V) – Sleep Radio; (0V) – Wake Radio
As an option could be used as TTL Input Line 1.
7 DPORT3 MDM_GRN TTL Output Data Carrier Detect
Used by remotes to indicate that the remote has successfully acquired the signal from
base station:
(0V) – Carrier detected (synchronized)
(3.3V) – No carrier detected (not synchronized)
8 DPORT4 RTS TTL Input Request to Send
Gates the flow of receive data from the radio to the user on or o. An internal 10K pull-
down enables data receive if this signal is le unconnected. In normal operation, this
signal should be asserted:
(0V) – Receive data (RxD) enabled
(3.3V) – Receive data (RxD) disabled
9 DPORT2 DSR TTL Output Data Set Ready
Used to control transmit flow from the user to the radio:
(0V) – Receive buer has data to transfer;
(3.3V) – Receive buer is empty
10 RES CONT RESCONT TTL Input Reset the radio Reset the radio by shortening this pin to the ground.
11 TTLO1 TTLOUT1 TTL Output TTL Output Line 1 Reserve line
12 TTLO2 TTLOUT2 TTL Output TTL Output Line 2 Reserve line
13 GND GND - Ground Signal and Chassis Ground
14 TTLI2 TTLIN TTL Input TTL Input line An internal 100K pull-up resistor is applied.
15 VCC36 PWR External Power Supply Regulated positive 3.6V DC from ext. Power Supply.
16 VCC36 PWR External Power Supply Regulated positive 3.6V DC from ext. Power Supply.
12.4 0.490
7.4 0.290
9.4 0.370
Connector, 16-Lead,Header
80.8 3.180
45.7 1.800
MMCX Connector
Dimension in mm [inch].
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